Telephone lockout-relay.



F. Assn, TELEPHONE LOCKOUT' RELAY.

' v APPLICATION FILED. JULY 29,19l6. 1,290,691.

Patented Jan. 7,1919.

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F. W. ADSIT.

TELEPHONE LOCKOUT RELAY. APPLICATION FILED JULY 29,1916.

Patented M11919.

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FRANK W. ADSIT, OF CHICAGO, ILLINOIS TELEPHONE LOCKOUT-RELAY.

Specification of Letters Patent.

Patented Jan. 7, 1919.

Application filed July 29, 1916. Serial No. 112,152.

To all whom it may concern:

Be it known that I, FRANK WV. Ansrr, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Telephone Lockout-Relays, of which the following is a specification.

One object of my invention is to provide in a telephone lockout relay means whereby the armature may be drawn up with one coil and held up after being so drawn up by a much weaker coil.

Another object of my invention is to provide in a telephone lockout relay two sets of electromagnets and a set of contacts associated with each of the electromagnets in such manner that when one set of magnets is operated one set of contacts will be opened and vice versa, but if both sets of magnets are opened all contacts will remain closed.

With these and incidental objects in view the invention consists of certain novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany and form a part of this specification.

Figure 1 is a perspective view of my improved telephone lockout relay. Fig. 2 shows a two party line lockout telephone circuit with my improved relay applied thereto and shown in partly conventional form.

The relay comprises a frame 1, Fig. 1, carrying thereon upright coils 2 and 3, and horizontal coils 4 and 5.

From the arm 6 formed from the frame 1 is pivoted a toggle motion comprising levers 7 and 8, one end of the lever 8 being pivoted to the link 9 fastened on the ear 10 of the frame and carrying the armature 11 coacting with the coil 5.

The toggle arm 7 carries an armature 12 coacting with the coil 2, and similar levers 13 and 14, carrying an armature 15 coacting with the coil 3, while the link 16 carrying an armature 17, better shown in Fig. 2, coacts with the coil 4.

Carried by the insulated bar 18, Fig. 1, are three contact arms 19, 20 and 21, arms 19 and 21 being pivoted and insulated from the arms 22 and 23 formed from the frame 1.

Adjustable contact points 24, 25 and 26, carried by arms 19, 20 and 21, are adapted to make contact with springs 27, 28 and 29, respectively, the contact springs 27 and 29 being carried by the toggle levers 7 and 13, respectively, and the contact spring 28 is mounted on the insulated block 30 supported on the toggle arm 7 v Contact springs 31 and 32 are carried on the toggle arms 8 and 14, respectively, and are adapted to make contact with the'adjustable contactrpoints 33 and 34, respectively, carried on the frame members and insulated therefrom.

The coils 5 and 4 are preferably wound and used in such circuits that they will be of strong magnetic action, and by actuating their armatures 11 and 17, respectively, will tend to straighten out the toggle arms 7 and 8, and 13 and 14, respectively, and close the contact between 31 and 33, 32 and 34, respectively.

If the toggle motion associated with coil 5 is actuated, while that associated with coil 4 is not actuated, it is evident that contact between point 24 and spring 27, and point 25 and spring 28, will be opened, but the con tacts between contact point 26 and spring 29, will remain closed. I

Likewise, if the toggle motion of the arms 13 and 14 is actuated, the contact between the point 26 and spring 29 will be opened, while the contacts between points 24 and 25, and springs 27 and 28, respectively, will remain closed.

It is also apparent that if the coil5 is actuated the contact between spring 31 and contact point 33 will be closed, and if the coil 4 is actuated, the contact spring 32 and point 34 will be closed, and these contacts will be closed even though both coils are actuated at the same time. 4

In Fig. 2, I show my improved relay in a two party telephone circuit, in which two telephone sets A and B are connected to line wires C and D through my improved relay.

In this circuit, if subscriber A removes his receiver from his hook the circuit will become completed from the exchange to which the Wires will be connected over line wire C, wire 41, through the talking set A, wire 42, coil 5, wire 44, contact 45, between spring 29 and contact point 26, toggle arm 13, wire 46, line wire D to central, actuating the coil 5, closing the contact 47 and opening contacts 48 and 49. When contact 47 is closed the coil 2 is then bridged across the coil 5 through the contact 47, and as this coil 2 is provided with a non-inductive resistance coil 50, it will not have any appreciable efiect on talking currents.

It is apparent that the station B in order to complete the circuit over linewires C and D must have the contacts 48 and 49 closed, hence the station B is now locked out both sides of the line Wires C and D, being cut off the line at 48 and 49,

I If the subscriber at station B should remove his receiver from the hook, station Anot being in use, the coil 4 will be actuated over the following circuit:

From exchange over line wire C, wire 51,'contact' 49, wire 52, through the talki'ng set at station B, wire 53, wire 54, coil 4, w'ire 55, contact 48, arm 7, wire 56, over the line wire D to the exchange, completing the-circuit, and as station A depends upon contact 45 to complete the circuit with central, it is'evident that station A will be locked out byithe actuation of coil 4,

and'thec'oil 3, similar to coil 2, will close its assoclated contact 57, which bridges e011 3, and lts assoclated non-lnductive resistance 58 acrossthe high wound coil 4, so as to not interfere with the talking qualities of the circuit.

If'sta'ti'on A wishes to call station B,

the subscriber at A would remove his receiver'in the ordinary manner and give cen- 'tral the call,and'on such a call, central would'ask him to hang his receiver up while she rang, and if her ringi'ng circuit provided means whereby battery would be both coils 4 and 5 will be actuated with their associated link motion, and while contacts 47 and '45 will be closed in the same manner asheretofore described, contacts 45, 48 and 49 will also remain closed during and afterthe motion of the toggle links, sothat neither arty will be cut 'olf 'fromcommunication with each other or "central.

It is apparent from the "link motion associated with coil 5, for instance, that a small motion of the link 9', which is held in its 'normahpositlon by the spring 59, will result in a comparatively large motion of the 'c'ontacts48' a'nd' 49, and when the contact 47 "copieiartms'patent may be o'otained for'five cents each,by addressing the is made the coil 21, which necessarily has a weaker magnetic pull has a much stronger leverage through its toggle jointed armature in holding the links against the action of the spring 59.

While I have described my invention and illustrated it in one particular design, I do not wish it understood that I limit myself to this construction, as it is evident that the application of my invention may be varied in many ways within the scope of the following claims:

Claims:

1. In a telephone lockout relay the combination of a coil, a frame supporting said coil, an armature pivoted on said frame and associated with said coil, a toggle joint, one end of which'is carried by said armature, and the other end of which is pivoted on said frame, a coil associated with said toggle joint, an armature on one of the links on said toggle joint adapted to be actuated by said coil associated therewith, and a contact associated with said toggle joint motion.

2. In a telephone lockout relay the combination of anoperating coil and a holding coil, a contact associated with said holding coil, and means associated with said "operating coil and said holding coil whereby said holding coil has a stronger leverage in holding its armature than said operating coil has in holding its armature.

8. In a telephone lockout relay the combination of two sets of coils, each set comprising a holding coil and an operating'coil, contacts associated wlth sald sets of 0011s,

and means associated withsaid sets of coils whereby the actuation of one'set' will open one contact, and the actuation of the other set will open another contact, but the actuation of both sets will cause both contacts to remain closed.

4. In a telephone lockout'relay the combination of a holding coil and an operating coil, a non-inductive shunt around said holding coil, a toggle motion associated with said holding coil and said supporting coil, 3

and closing a contact when actuated whereby said holding coil will be bridged across said operating coil, said holding coil having a stronger leverage on said toggle motion than said operatinglcoil. j I

FRANK W. ADSIT.

" Commissioner of Patents.

I Washington, D. G. 

